package ch9;

/**
 * Created by lyk on 2016/10/21.
 * Package name: ch9
 * Porject name: untitled1
 */

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Rectangle2D;
import java.util.Date;

/**
 * @version 1.33 2007-04-28
 * @author Cay Horstmann
 */
public class OptionDialogTest
{
    public static void main(String[] args)
    {
        EventQueue.invokeLater(new Runnable()
        {
            public void run()
            {
                OptionDialogFrame frame = new OptionDialogFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setVisible(true);
            }
        });
    }
}

/**
 * A panel with radio buttons inside a titled border.
 */
class ButtonPanel extends JPanel
{
    /**
     * Constructs a button panel.
     * @param title the title shown in the border
     * @param options an array of radio button labels
     */
    public ButtonPanel(String title, String... options)
    {
        setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(), title));
        setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
        group = new ButtonGroup();

        // make one radio button for each option
        for (String option : options)
        {
            JRadioButton b = new JRadioButton(option);
            b.setActionCommand(option);
            add(b);
            group.add(b);
            b.setSelected(option == options[0]);
        }
    }

    /**
     * Gets the currently selected option.
     * @return the label of the currently selected radio button.
     */
    public String getSelection()
    {
        return group.getSelection().getActionCommand();
    }

    private ButtonGroup group;
}

/**
 * A frame that contains settings for selecting various option dialogs.
 */
class OptionDialogFrame extends JFrame
{
    public OptionDialogFrame()
    {
        setTitle("OptionDialogTest");
        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

        JPanel gridPanel = new JPanel();
        gridPanel.setLayout(new GridLayout(2, 3));

        typePanel = new ButtonPanel("Type", "Message", "Confirm", "Option", "Input");
        messageTypePanel = new ButtonPanel("Message Type", "ERROR_MESSAGE", "INFORMATION_MESSAGE",
                "WARNING_MESSAGE", "QUESTION_MESSAGE", "PLAIN_MESSAGE");
        messagePanel = new ButtonPanel("Message", "String", "Icon", "Component", "Other", "Object[]");
        optionTypePanel = new ButtonPanel("Confirm", "DEFAULT_OPTION", "YES_NO_OPTION",
                "YES_NO_CANCEL_OPTION", "OK_CANCEL_OPTION");
        optionsPanel = new ButtonPanel("Option", "String[]", "Icon[]", "Object[]");
        inputPanel = new ButtonPanel("Input", "Text field", "Combo box");

        gridPanel.add(typePanel);
        gridPanel.add(messageTypePanel);
        gridPanel.add(messagePanel);
        gridPanel.add(optionTypePanel);
        gridPanel.add(optionsPanel);
        gridPanel.add(inputPanel);

        // add a panel with a Show button

        JPanel showPanel = new JPanel();
        JButton showButton = new JButton("Show");
        showButton.addActionListener(new ShowAction());
        showPanel.add(showButton);

        add(gridPanel, BorderLayout.CENTER);
        add(showPanel, BorderLayout.SOUTH);
    }

    /**
     * Gets the currently selected message.
     * @return a string, icon, component or object array, depending on the Message panel selection
     */
    public Object getMessage()
    {
        String s = messagePanel.getSelection();
        if (s.equals("String")) return messageString;
        else if (s.equals("Icon")) return messageIcon;
        else if (s.equals("Component")) return messageComponent;
        else if (s.equals("Object[]")) return new Object[] { messageString, messageIcon,
                messageComponent, messageObject };
        else if (s.equals("Other")) return messageObject;
        else return null;
    }

    /**
     * Gets the currently selected options.
     * @return an array of strings, icons or objects, depending on the Option panel selection
     */
    public Object[] getOptions()
    {
        String s = optionsPanel.getSelection();
        if (s.equals("String[]")) return new String[] { "Yellow", "Blue", "Red" };
        else if (s.equals("Icon[]")) return new Icon[] { new ImageIcon("yellow-ball.gif"),
                new ImageIcon("blue-ball.gif"), new ImageIcon("red-ball.gif") };
        else if (s.equals("Object[]")) return new Object[] { messageString, messageIcon,
                messageComponent, messageObject };
        else return null;
    }

    /**
     * Gets the selected message or option type
     * @param panel the Message Type or Confirm panel
     * @return the selected XXX_MESSAGE or XXX_OPTION constant from the JOptionPane class
     */
    public int getType(ButtonPanel panel)
    {
        String s = panel.getSelection();
        try
        {
            return JOptionPane.class.getField(s).getInt(null);
        }
        catch (Exception e)
        {
            return -1;
        }
    }

    /**
     * The action listener for the Show button shows a Confirm, Input, Message or Option dialog
     * depending on the Type panel selection.
     */
    private class ShowAction implements ActionListener
    {
        public void actionPerformed(ActionEvent event)
        {
            if (typePanel.getSelection().equals("Confirm")) JOptionPane.showConfirmDialog(
                    OptionDialogFrame.this, getMessage(), "Title", getType(optionTypePanel),
                    getType(messageTypePanel));
            else if (typePanel.getSelection().equals("Input"))
            {
                if (inputPanel.getSelection().equals("Text field")) JOptionPane.showInputDialog(
                        OptionDialogFrame.this, getMessage(), "Title", getType(messageTypePanel));
                else JOptionPane.showInputDialog(OptionDialogFrame.this, getMessage(), "Title",
                        getType(messageTypePanel), null, new String[] { "Yellow", "Blue", "Red" },
                        "Blue");
            }
            else if (typePanel.getSelection().equals("Message")) JOptionPane.showMessageDialog(
                    OptionDialogFrame.this, getMessage(), "Title", getType(messageTypePanel));
            else if (typePanel.getSelection().equals("Option")) JOptionPane.showOptionDialog(
                    OptionDialogFrame.this, getMessage(), "Title", getType(optionTypePanel),
                    getType(messageTypePanel), null, getOptions(), getOptions()[0]);
        }
    }

    public static final int DEFAULT_WIDTH = 600;
    public static final int DEFAULT_HEIGHT = 400;

    private ButtonPanel typePanel;
    private ButtonPanel messagePanel;
    private ButtonPanel messageTypePanel;
    private ButtonPanel optionTypePanel;
    private ButtonPanel optionsPanel;
    private ButtonPanel inputPanel;

    private String messageString = "Message";
    private Icon messageIcon = new ImageIcon("blue-ball.gif");
    private Object messageObject = new Date();
    private Component messageComponent = new SampleComponent();
}

/**
 * A component with a painted surface
 */

class SampleComponent extends JComponent
{
    public void paintComponent(Graphics g)
    {
        Graphics2D g2 = (Graphics2D) g;
        Rectangle2D rect = new Rectangle2D.Double(0, 0, getWidth() - 1, getHeight() - 1);
        g2.setPaint(Color.YELLOW);
        g2.fill(rect);
        g2.setPaint(Color.BLUE);
        g2.draw(rect);
    }

    public Dimension getPreferredSize()
    {
        return new Dimension(10, 10);
    }
}
